VSX Instructions

290 PowerISA instructions in this extension - showing 90 per page, page 3 of 3 - click any row for encoding, pseudocode, and full documentation.

Mnemonic ⇅	Syntax	Format ⇅	Summary
xvcvuxddp	xvcvuxddp VRT, VRA, VRB	XX2-form	Converts an unsigned doubleword vector element to a double-precision floating-point value.
xvcvuxdsp	xvcvuxdsp VS32,VS64	XX2-form	Converts an unsigned doubleword to a single-precision floating-point value with rounding.
xvcvuxwsp	xvcvuxwsp XT, XB	XX2-form	Converts four 32-bit unsigned integers to four floats.
xvdivdp	xvdivdp XT, XA, XB	XX3-form	Divides the contents of two vector registers and places the result in another vector register.
xvdivsp	xvdivsp XT, XA, XB	XX3-form	Divides the contents of two vector registers and places the result in another vector register.
xvi8ger4spp	xvi8ger4spp AT,XA,XB	XX3-form	Performs a vector-scalar operation on 8-bit signed and unsigned integers with saturation.
xviexpdp	xviexpdp XT,XA,XB	XX3-form	Inserts the exponent from one vector register into another for double-precision floating-point numbers.
xvmaddadp	xvmaddadp XT, XA, XB	XX3-form	Performs a double-precision floating-point multiply-add operation on vector elements.
xvmaddasp	xvmaddasp XT,XA,XB	XX3-form	Performs a single-precision floating-point multiply-add operation on vector elements.
xvmaxdp	xvmaxdp XT, XA, XB	XX3-form	Compares two double-precision floating-point values and selects the maximum value for each element.
xvmaxsp	xvmaxsp XT, XA, XB	XX3-form	Computes the maximum of corresponding single-precision floating-point elements in two vector registers and stores the result in a third vector register.
xvmindp	xvmindp XT, XA, XB	XX3-form	Compares two double-precision floating-point values and selects the minimum value for each element.
xvminsp	xvminsp XT, XA, XB	XX3-form	Performs a minimum operation on single-precision floating-point values from two vector scalar registers and stores the result in another vector scalar register.
xvmsubadp	xvmsubadp XT,XA,XB	XX3-form	Performs a double-precision floating-point multiply-subtract operation on vector elements.
xvmsubasp	xvmsubasp XT,XA,XB	XX3-form	Performs a vector multiply-subtract operation on single-precision floating-point values.
xvmsubmdp	xvmsubmdp VRT, VRA, VRB, VRC	XX3-form	Multiplies corresponding double-precision floating-point elements of two VSX registers, subtracts the corresponding element of a third register, and stores the results, using the Type-M (multiplicand) form.
xvmuldp	xvmuldp XT, XA, XB	XX3-form	Multiplies two double-precision floating-point numbers in vector registers and stores the result.
xvmulsp	xvmulsp XT, XA, XB	XX3-form	Multiplies the contents of two single-precision floating-point values and places the result into a vector register.
xvnabsdp	xvnabsdp XT,XB	XX2-form	Computes the negative absolute value of each double-precision floating-point element in a vector.
xvnegdp	xvnegdp XT, XB	XX2-form	Negates the contents of a double-precision floating-point vector register and stores the result in another vector register.
xvnegsp	xvnegsp XT, XB	XX2-form	Negates the contents of a single-precision floating-point register.
xvnmaddadp	xvnmaddadp XT,XA,XB	XX3-form	Performs a negative multiply-add operation on double-precision floating-point elements.
xvnmaddasp	xvnmaddasp XT,XA,XB	XX3-form	Performs a negative multiply-add operation on single-precision floating-point elements.
xvnmaddmsp	xvnmaddmsp XT,XA,XB	XX3-form	Performs a vector single-precision floating-point negative multiply-add operation (Type-M), computing the negation of (XB * XT + XA) for each single-precision element.
xvnmsubadp	xvnmsubadp XT,XA,XB	XX3-form	Performs a negative multiply-subtract operation on double-precision floating-point elements.
xvnmsubasp	xvnmsubasp XT,XA,XB	XX3-form	Performs a negative multiply-subtract operation on single-precision floating-point elements.
xvnmsubmdp	xvnmsubmdp VRT, VRA, VRB, VRC	XX3-form	Performs a negative multiply-subtract operation on double-precision floating-point values.
xvrdpi	xvrdpi XT,XB	XX2-form	Rounds each element of a double-precision floating-point vector to the nearest integer away from zero.
xvrdpic	xvrdpic XT,XB	XX2-form	Rounds each double-precision floating-point element of a vector to an integer using the current rounding mode.
xvrdpim	xvrdpim XT,XB	XX2-form	Rounds the contents of a vector register towards negative infinity and stores the result in another vector register.
xvrdpiz	xvrdpiz XT,XB	XX2-form	Rounds each double-precision floating-point element in a vector towards zero and stores the result as an integer.
xvredp	xvredp XT,XB	XX2-form	A double-precision floating-point estimate of the reciprocal of src is placed into doubleword element i of VSR[XT] in double-precision format.
xvresp	xvresp XT,XB	XX2-form	Estimates the reciprocal of single-precision floating-point values in a vector.
xvrspi	xvrspi XT,XB	XX2-form	Rounds each element of a vector from single-precision floating-point format to an integer using round to Nearest Away.
xvrspic	xvrspic XT,XB	XX2-form	Rounds each single-precision floating-point element of a vector to an integer using the current rounding mode.
xvrspim	xvrspim XT,XB	XX2-form	Rounds each element of a vector from single-precision floating-point format to integer format, rounding towards negative infinity.
xvrspiz	xvrspiz XT,XB	XX2-form	Rounds each single-precision floating-point element of a vector towards zero and stores the result in another vector.
xvrsqrtedp	xvrsqrtedp XT,XB	XX2-form	Estimates the reciprocal square root of double-precision floating-point values in vector registers.
xvrsqrtesp	xvrsqrtesp XT,XB	XX2-form	Estimates the reciprocal square root of single-precision floating-point values in a vector.
xvsqrtdp	xvsqrtdp XT, XB	XX2-form	Computes the square root of each double-precision floating-point element in a vector.
xvsqrtsp	xvsqrtsp XT, XB	XX2-form	Computes the square root of each single-precision floating-point element in a vector.
xvsubdp	xvsubdp XT, XA, XB	XX3-form	Subtracts the contents of two vector registers and places the result in a target vector register.
xvsubsp	xvsubsp XT, XA, XB	XX3-form	Subtracts the contents of two vector registers and places the result in another vector register.
xvtdivdp	xvtdivdp BF,XA,XB	XX3-form	Performs a double-precision floating-point division on vector elements and sets condition flags based on the results.
xvtdivsp	xvtdivsp BF,XA,XB	XX3-form	Performs a vectorized single-precision floating-point division test.
xvtlsbb	xvtlsbb BF,XB	XX2-form	Tests the least-significant bit of each byte in a VSX vector register and sets a condition register field based on the results.
xvtsqrtdp	xvtsqrtdp BF,XB	XX2-form	Tests the double-precision floating-point operands in VSR[XB] and sets condition register field BF based on certain conditions.
xvtsqrtsp	xvtsqrtsp BF,XB	XX2-form	Tests each element of a vector for conditions related to square root operations.
xvtstdcdp	xvtstdcdp XT,XB,DCMX	XX2-form	Tests each double-precision floating-point element in a vector against specified data classes and sets the corresponding elements in another vector to either all ones or all zeros based on the match.
xvtstdcsp	xvtstdcsp XT,XB,DCMX	XX2-form	Tests each single-precision floating-point element in a vector against specified data classes and sets the corresponding elements in another vector based on the match.
xvxexpdp	xvxexpdp XT,XB	XX2-form	Extracts the exponent from each double-precision floating-point value in a vector and places it into another vector.
xvxsigdp	xvxsigdp XT,XB	XX2-form	Extracts the significand of double-precision floating-point values from a vector register and places them into another vector register.
xxblendvb	xxblendvb XT, XA, XB, XC	XX4-form	Selects bytes from XA or XB based on the MSB of bytes in XC.
xxblendvd	xxblendvd XT, XA, XB, XC	XX4-form	Selects doublewords from XA or XB based on the MSB of doublewords in XC.
xxblendvh	xxblendvh XT, XA, XB, XC	XX4-form	Selects halfwords from XA or XB based on the MSB of halfwords in XC.
xxblendvw	xxblendvw XT, XA, XB, XC	XX4-form	Selects words from XA or XB based on the MSB of words in XC.
xxbrd	xxbrd XT,XB	XX-form	Reverses the bytes of each doubleword element in a vector register.
xxbrh	xxbrh XT,XB	XX2-form	Reverses the bytes of each halfword in a vector register.
xxbrw	xxbrw XT,XB	XX2-form	Reverses the bytes of each word in a vector register.
xxeval	xxeval XT, XA, XB, XC, IMM	8RR:XX4-form	Performs an arbitrary 3-input boolean logic function (LUT3) on vectors. The 8-bit immediate 'IMM' defines the truth table.
xxextractuw	xxextractuw RT, XS, UIM	XX2-form	Extracts an unsigned word from a vector register and places it into another vector register.
xxgenpcvbm	xxgenpcvbm XT, XB, IMM	XX2-form	Generates a permute control vector based on the byte mask in VSR[VRB+32].
xxgenpcvdm	xxgenpcvdm XT, XB, IMM	XX2-form	Generates a permute control vector (PCV) based on the doubleword mask in VSR[VRB+32] and stores it in VSR[XT].
xxgenpcvhm	xxgenpcvhm XT, XB, IMM	XX2-form	Generates a permute control vector (PCV) based on the halfword mask in VSR[VRB+32].
xxgenpcvwm	xxgenpcvwm XT, XB, IMM	XX2-form	Generates a permute control vector (PCV) based on the word mask in VSR[VRB+32] and stores it in VSR[XT].
xxinsertw	xxinsertw XT, RB, UIM	XX2-form	Inserts a 32-bit word from a GPR into a specific element of a VSR.
xxland	xxland XT, XA, XB	XX3-form	Performs a bitwise AND operation on the contents of two vector registers and stores the result in another vector register.
xxlandc	xxlandc XT, XA, XB	XX3-form	vD = vA & ~vB
xxleqv	xxleqv XT, XA, XB	XX3-form	vD = ~(vA ^ vB) (XNOR)
xxlnand	xxlnand XT, XA, XB	XX3-form	vD = ~(vA & vB)
xxlnor	xxlnor XT, XA, XB	XX3-form	Performs a logical NOR operation on the contents of two VSX registers and stores the result in another VSX register.
xxlor	xxlor XT, XA, XB	XX3-form	Bitwise OR.
xxlorc	xxlorc XT, XA, XB	XX3-form	vD = vA \| ~vB
xxlxor	xxlxor XT, XA, XB	XX3-form	Bitwise XOR.
xxmrghd	xxmrghd XT, XA, XB	XX3-form	Merges high doublewords from XA and XB.
xxmrghw	xxmrghw XT, XA, XB	XX3-form	Merges the high words of two VSX registers into a target VSX register.
xxmrgld	xxmrgld XT, XA, XB	XX3-form	Merges low doublewords from XA and XB.
xxmrglw	xxmrglw XT, XA, XB	XX3-form	Merges low words from two VSRs.
xxperm	xxperm XT, XA, XB, XC	XX4-form	Performs a vector permute operation on the contents of three VSX registers.
xxpermdi	xxpermdi XT, XA, XB, DM	XX3-form	Selects two doublewords from the four available in source registers XA and XB based on a 2-bit selector.
xxpermr	xxpermr XT, XA, XB, XC	XX4-form	Little-endian optimized permute.
xxpermx	xxpermx XT, XA, XB, XC, UIM	XX4-form	Permutes bytes from two source vectors using a control vector and a 3-bit selector.
xxsel	xxsel XT, XA, XB, XC	XX4-form	Selects elements from two source vectors based on a mask vector.
xxsldwi	xxsldwi XT,XA,XB,SHW	XX3-form	Shifts the contents of two vector registers left by a specified number of words and places the result into another vector register.
xxsplti32dx	xxsplti32dx XT, IX, IMM	8RR:D-form	Splats a 32-bit immediate into a doubleword index.
xxspltib	xxspltib XT, IMM	X-form	Copies an immediate byte value into each byte element of a vector register.
xxspltidp	xxspltidp XT, IMM	8RR:D-form	Spatially duplicates a 32-bit immediate (converted to double) into both double elements.
xxspltiw	xxspltiw XT, IMM	8RR:D-form	Spatially duplicates a 32-bit immediate into all 4 words of the target.
xxspltw	xxspltw XT, XS, UIM	XX2-form	Replicates a word element from one vector register into all elements of another vector register.
xxswapd	xxswapd XT, XB	XX2-form	Swaps the two doublewords in the register.